Arduino tracing for debugging

arduino m0 samd21 debug trace

Tracing and dumping information with ArduinoTrace library when debugging Arduino code.

Code

Download code 
#define ARDUINOTRACE_SERIAL SerialUSB
#include <ArduinoTrace.h>

int someValue = 42;

void setup() {
    SerialUSB.begin(9600);
    while (!SerialUSB) { }
    delay(100);
    DUMP(someValue);
}

void loop() {
    SerialUSB.print(millis());
    SerialUSB.print(": ");
    TRACE();

    blink(5);
    delay(2000);
}

void blink(int num) {
    SerialUSB.print(millis());
    SerialUSB.print(": ");
    TRACE();

    SerialUSB.print(millis());
    SerialUSB.print(": ");
    DUMP(num);

    digitalWrite(LED_BUILTIN, HIGH);
    delay(500);

    digitalWrite(LED_BUILTIN, LOW);
    delay(500);
}

Serial console

Serial output from the firmware.

Arduino tracing for debugging serial console

References

  1. ArduinoTrace library
  2. How to debug an Arduino program with the "tracing" technique
  3. Toggling Debug Code